通过海洋环境条件下大直径管桩的垂直和水平荷载试验,分析了管桩在垂直和水平荷载作用下的受力特点,得到了管桩的垂直极限承载力、侧摩阻力及端承力、轴向反力系数等结果,以及水平荷载作用下桩顶位移和转角关系、弯矩分布、土抗力、水平地基反力系数的比例系数和最大弯矩点等参数。试验结果表明：垂直荷载作用下,极限承载力可达12000kN,在沉桩过程中部分桩有一定程度的闭塞;大直径管桩能够抵抗水平荷载的作用,弹性长桩的受力性质主要受上部土层的影响。根据试验结果计算的水平地基抗力比例系数m值,对本工程及同类地质条件的桩基设计具有参考价值。%According to the vertical and lateral loading test in condition of ocean environment,the mechanical properties of the large diameter pipe pile under vertical and lateral load is analyze.The ultimate bearing capacity,shaft resistance and point resistance force,and coefficient of axial reaction,etc.,in case of vertical loading,and displacement vs deflection of in pile block,bending moment distribution,earth resistance,coefficient of proportionality of horizontal subgrade reaction and point of the maximum bending moment,etc.,in case of lateral loading are obtained.It is shown from the test results that the ultimate bearing capacity of the large pipe piles is 12000kN.Some certain of clogging effect occur during the driving process of the some pile.In addition,the piles can effectively bear the lateral loads,and the bearing capacity of the long elastic pile is mainly affected by the upside soil and the calculated proportional coefficient describing the lateral resistance of foundation can be used as a reference for the design of the similar engineering.
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